In warm water．there is a kind of sea mammal（哺乳动物）called dugongs．They live a comfortable life．They have no natural enemies（敌人）and never fight（打架）．Dugongs lived in the oceans during the age of dinosaurs（恐龙）．They have funny faces and no front teeth! Their teeth grow only along the sides of their mouths．Some think they are ugly．Only their mothers may love them，but as we know, they are important and helpful for us!

    Dugongs only eat plants．They swim slowly so that they can eat the sea grass They often dig down into the sand and eat sea-grass roots．Dugongs relax during the day．During most of the night，they eat．They eat noisily and you can often hear the sounds of their chomping teeth．

    Dugongs give birth to only one baby every three to five years．They take the newborn baby to the surface of the water so that the baby can take its first breath of air．It stays with its mother for two years and sometimes rests on its mother’s back．Dugongs feed their young with milk．

    Dugongs can live for about 60 years，but every year more and more people move to the warm coasts and rivers which are also the homes to dugongs．

1．Which is the best title for this article?

A．The Kind Animal                                         B．Dugongs’Lives

C．Dugongs Are Nice                                      D．Mother Loves Dugongs

2．The underlined words“chomping teeth”mean ________．

A．washing teeth                                             B．changing teeth

C．eating loudly                                              D．opening the mouth

3．Which of the following is TRUE?

A．Dugong babies live with their mother when they are 3 years old．

B．Dugongs eat animals and plants．

C．Dugongs give birth every year．

D．Dugongs can live for as long as 60 years．

4．Why do dugongs have fewer places to live and feed? Because ________．

A．they live a comfortable life                          

B．they only eat plants

C．more and more people move to the warm coasts and rivers which are also the homes to dugongs

D．they give birth to many babies every year．

Once there was an old farmer．He had a horse and the horse was almost as old as himself．One morning he set out with his young son to sell the horse before it died．The rather and the son walked because the farmer did not want the horse to be too tired（疲劳）．They met two men on the road．They said，”Why are you walking，farmer? You have a horse．It’s a long way to get to the market．”The farmer knew that this was true．so he rode on the horse while his son walked．Then they met two old ladies．”What are you doing up there，farmer? Can’t you see how tired your son is?”So the farmer got down，and let his son ride on it．Twenty minutes later，three old men stopped them．One said．”Why are you walking，farmer? Get up．It’s too hot for an old man like you to walk today．”So the farmer got up behind his son and they went on riding．Some time later, a young woman passed them．”Why aren’t you walking?”she asked．”It isn’t far to the market．Give your poor old horse a rest．”So the farmer and his son got down once again．It is a fact that you cannot please all the people all the time．

1．The farmer was __________．

A．nearly the same age as his horse                   B．almost always older than his horse

C．not quite as old as his horse                         D．a little older than his horse

2．The two men on the road __________．

A．asked how far it was to the market

B．said they thought the horse looked very tired

C．asked why the farmer was not riding on his horse

D．told the farmer’s son to get off the horse and walk

3．The two old ladies said it was wrong for __________．

A．the farmer to ride such a tired horse

B．the farmer to ride while his young son walked

C．the boy to ride instead of his father

D．only one person to ride such a long way

4．The farmer got up behind his son because __________．

A．the old man said it was too hot for him to walk．

B．the three old men stopped them on the road

C．he did hot know why he was walking

D．his son could not ride the horse by himself

5．What did the writer really want to tell us?

A．The old man was a fool．

B．The horse was old and was going to die．

C．It is not right to listen to others．

D．It is impossible for a man to make everyone satisfied（满意）all the time．

It’s important to learn about protecting our environment. Here is a 5R rule for us:

1. Reduce

If you want to reduce waste, you should use things wisely. Millions of trees are being cut down to make paper. If everyone uses a little paper carelessly and throw it out, soon we would not have any trees left. Other things are also being wasted, and people don’t know what to do with the waste in big cities. So it is necessary to reduce the waste

2. Reuse

You should always think of reusing the usable things before throwing them out. Give your clothes you do not use or the ones which are too small to the poor. With a family, you may pass on such clothes to younger brothers or sisters.

3. Recycle

Bottles, cans and paper can easily be recycled. By doing so, we save lots of time and money. For example, coke cans are sent to a factory, where they are smashed flat（压平）and melted (融化) and the melted things are made for new coke cans.

4. Recover

When you buy a box of apples, there may be a few rotten（腐烂的）apples. You have two choices: one is to throw the whole apple away, or you could cut off the rotten parts and eat the good parts. In this way, you are recovering the eatable parts of food.

5. Repair

If one of the legs of your table is broken, you can repair it instead of throwing it away. If you want to change for better ones, It is better for you to sell the old things or give them to other people who can use them after doing some repairs. It is true that North America is a “throw-away” society（社会）. But the time has come to change our way of life so that we can protect our environment. Every one of us should try our best.

1._______ can be recycled.

A．Only hard things    B．Many things        C．Few soft things     D．All things

2.The “recover” rule mainly requires us _______.

A．to throw waste things away                B．to cover waste things with earth

C．to get back the useful parts                D．to throw the whole things away

3.We can infer（推断） that the writer of this passage may live in _______.

A．China            B．Japan             C．Australia          D．America